Hoisting apparatus and controlling means therefor



c. ZETTERLUND.

HOISTING APPARATUS AND CONTROLLING MEANS THEREFOR.

APPLICATION FILED NOV. 24, I919.

1,339,253. Patented y 4, 1920.

2 SHEETS-SHEET I. -iq

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/ HOISTING APPARATUS AND CONTROLLING MEANS THEREFOR. 1,339,253.

APPLICATION FILED NOV. 24, 1919.

- Patented May 4, 1920.

2 SHEETSSHEET 2- UNITED STATES PATENT OFFICE.

CARL ZETTERLUND, or CHICAGO, rumors.

HOISTING APPARATUS AND CONTROLLING MEANS THEREFOR.

Application filed November 24, 1919. Serial No. 310,090.

To all whom it may concern:

Be it known that I, CARL ZETTERLUND, a citizen of the United States,residing at Chicago, in the county of Cook and State of Illinois, haveinvented certain new and useful Improvements in Hoisting Apparatus andControlling Means Therefor, of which the following is a specification;

This invention relates to improvements in a hoisting apparatus and meansfor controlling the operation of the parts thereof, of a type which ismore particularly intended for use in coi'iveying building material,such as, brick, stone, mortar and the like, from one floor to anotherthereof, in the construction or alteration of buildings, and'it consistsin certain peculiarities of the construction, novel arrangement,combination and operation of the various parts thereof, as will behereinafter more fully set forth and specifically claimed.

The principal object of the invention is to provide an apparatus of theabove mentioned general character, which shall be of such constructionand arrangement of its parts as to be readily erected or installed onone of the floors (preferably the ground floor) of a building, and solocated with respect to the upper floor or floors, as to en ablematerial of the desired kind, to be con-' veyed thereby from'one floorto another.

A further object is'to provide simple and efficient means forcontrolling the operation of the apparatus, preferably from the point ofdelivery of the material.

Numerous other objects and advantages of the invention will be set forthin the following description and explanation.

In the accompanying drawings, which serve to illustrate an embodiment ofthe invention- Figure 1 is a top plan view of a hoisting apparatus andcontrolling means therefor embodying one form of the invention.

Fig. 2 is a side view of the apparatus showing the uprights whichsupport the tackle-block for the carriers and provide tracks or railsfor the rollers on said carriers, shortened for the convenience ofillustration. V

Fig. 3 is an enlarged view partly in section and partly in elevationtaken on line 3-3 of Fig. looking in the direction indicated by thearrows, and illustrating one form of the tackle-block and the means forlocking and releasing the same.

Specification of Letters Patent.

Fig. 4 is a detached plan .view of the locking bolt for saidblock.

Fig. 5 is a front face view of the apparatus. Y Y i Fig. 6 is a similarview of a modified form of the tackle-block showing it mounted on theupper part of the supporting uprights,

and

Fig. 7 is a plan sectional view taken on line 7-7 of Fig. 2.

Like numerals of'reference refer to corresponding parts throughout thedifferent views of the drawings. v

The numeral 10 designates a fragment of the floor of a building, onwhich is mounted and secured thereto a base 11 which has a centrallydisposed rectangular or box-like upward extension 12in which extensionthe lower ends of a pair of spaced apart up rights 13 are located, as isclearly shown in Figs. 2, 5 and? of the drawings. The up right members13 may be made of any suit able length and material, but by preferenceare of sufficient length to extend from the ground floor, or one of thefloors of a building through a suitable opening 14 in the next floor 15abovethe floor on which the base of the apparatus is mounted, see Fig. 5of the drawings. In this view it will be seen and understood that theuprights 13 extend sufiiciently above the floor 15 to enable thecarriers to be raised through the opening 1 1 without interference withthe tackle-block which is mounted on the upper portion of said uprights.

In order to steady the uprights and. to prevent lateral movementthereof, a brace 16 is extended between them and secured to the floor 15at each side of the opening 14 therein. This braceis provided with anopening 17 for the passage of a pair of cables used for the purpose tobe presently explained. Located between the upper portions of theuprights 13, and. detachably secured thereto by means of screw bolts 18is the offset portion 19 of the upright standard 20 which is provided atits upper end with a forwardly extended hook 21 to engage an eye 22swiveled or otherwise secured on the upper portion of the hanger 23which is forked as shown and has located between its prongs a groovedblock or pulley 24: mounted on a shaft 25 journaled in the lowerportions of the prongs of the hanger.

The pulley or block 24 is provided on its face opposite the standard 20with a series of pits or depressions 26 arranged concentrically aroundthe shaft 25 and are for the engagement with a locking and releasingbolt 27 which has its inner end beveled as at 28 on one side and theopposite side of its inner end flat or straight as at 29, see Fig. 4of'the drawings. This locking bolt is located for rotation in a tubularextension 30 provided on the lower portion of a link 31 which ispivotally mounted on the shaft 25 of the pulley 24L inwardly of thefront prong of the hanger 23 and is loosely connected at its upper endto a depending arm 32 of a brake-shoe which has a down wardly extendedchannel 3% .in its upper portion.

As is clearly shown in Fig. 3 of the drawings, the shoe 33 is pivotallymounted on a rod 35 which is tranversely located in vertical slots 36 inthe upper portion of the hanger'23. Located in the channel 3st of theshoe and supported on the rod is a block 37 of wood or other suitablematerial used for contacting with the cable 38 which passes over theblock or pulley 24 and is attached at its ends to the bails of thecarriers for the material.

By this arrangement it is apparent that the block 37 carried by thebrakeshoe will be brought into contact with the cable 38 so as to createpressure thereon and thus retard the movement of the carriers, throughthe engagement of the bolt 27 with the pulley 24 which engagement ofsaid parts will cause the link 31 to move the shoe downwardly. As shownin Figs. 3 and l of the drawings, the bolt 27 is provided in its outerportion with a transverse opening 39 in which is slidably located ahandle 4-0 which has at each of its ends an eye ll through which arepassed cables-42 and 43 which extend downwardly and forwardly betweenthe uprights l3 and through the opening l7 in the brace 16 when the sameis used. These cables also extend around a pulley 4-1; mounted on ashaft 45 transversely journaled on the base 11 of the apparatus. Theshaft 45 has journaled thereon near each ofits ends a pulley 4-6 overwhich are passed cables L7 and 48 which are suitably con nected at oneof their ends to the lower portion of the carriers 4:9 and for thematerial; The carriers 49 and 50 are by preference similar inconstri'lction and as shown are mounted. on opposite faces of theuprights 13. Each of the carriers may be made of any suitable size, formand material and consists of abase or floor 51 having an uprightme'inber 52 onits side adjacent to the uprights 13 which upright andbase are connected together by a bail 53 located transversely of thecarrier and at about the midde thereof. ,Each of the uprights 52 of eachof the carriers isprovided with a pair of grooved rollers5i located oneach side of the uprights 13 in such a way that said uprights will fitin the grooves of said rollers and thus act as guiding rails ortrackstherefor. V

Transversely journaled on a suitable support rearwardly of the uprights13 but near the same, is a driven shaft 55 which has mounted thereonnear one of its ends a drum 56 and near its other end a drum 57 each ofwhich are by preference grooved as shown. Each of the drums 56 and 57has around its hub a clutch face 58 for engagenent with clutches 59slidably mounted on the shaft 55 outwardly of the drums.

Mounted on the shaft 55 between thefdrums 56 and 57 is a worm gear 60which meshes with a worm 61 on the drive shaft 62 of an engine 63 whichmay be of the ordinary gasolene engine type, or any other kind, and issuitably mounted on the floor 10 rearwardly of the driven shaft 7 Eachof the clutches 59 is provided with a loosely encircling band 6 f fromeach of which is downwardly extended an arm 65, see Figs. 2 and 5 of thedrawings. Pivotally mounted for horizontal movement in front of theshaft 55 and near each end thereof is a lever 66 each of which has threearms 67, 68, and 69 extended radially, or substantially so, from thepivot of the lever. Each of the arms 67 is provided with a slot 79 forthe reception of the lower ends of the depending arms of the clutches.Each of the arms 68 of said levers is provided at its forward or freeend with an upwardly extended bracket 71 on which are journaled oneabove the other a pair of grooved rollers 72 which are for the guidanceof the cables 47 and -et8 which are extended between the rollers of eachpair and are secured at their ends to the drums on the driven shaft,thus it will be understood that the cables 47 and 48 are connected atone of their ends to the carriers and from thence are passed downwardlyaround the pulleys 46 on the shaft 4-5 at the base of the apparatus andare extended from said pulleys between the rollers 72 and from thence tothe drums on the driven shaft.

In Figs. 1 and 2 of the drawings it will be seen and understood thateach of the cables 47 and 48 is provided between the pair of rollers 72between which it passes and the pulley d6 over which it travels, with aknot or enlargement 73 which knots or enlargements are employed tocontact with the rollers 72 on the passage of the cables rearwardly theyare wound on the drums, thus causing the lever 66 to be alternately andautomatically turned so as to throw the clutches 59 out of engagementwith the clutch faces 58 of the drums. In order to cause the clutches 59to again engage their respective. clutch faces 58 the pair'of cables 42and i3 are secured atone of their ends a tackle-block mounted on theupper por tion thereof, a cable engaging said block and depending oneach side of said support, a carrier connected to each end said cableand each having guiding means engaging said support, a driven shaftmounted near the base of the support, means to drive said shaft, a pairof drums loosely mounted on said shaft and each having a clutch faclutches slidably mounted on said shaft to engage the clutch faces ofthe drums and to alternately fix them to said shaft, a band looselyencircling each of said clutches and each band having an arm projectedtherefrom, a lever having at least a pair of oppositely extended armsand pivotally supported near each of said clutches, one of the arms ofeach of said levers having a slot therein engaging the arm of the bandadjacent thereto, a pair of rollers journaled one above the other on theother arm of each of said levers, cables connecting the carriers anddrums in pairs and each of said cables extended between the rollers onsaid arms of said levers and provided with an enlargement to contactwith said rollers.

In an apparatus of the class described, the combination with an uprightsupport, of

a tackle-block mounted on the upper por-' fix them to said shaft, a bandloosely en- CllCllIlgeach of said clutches and each band having an armprojected therefrom, a lever having three arms extended therefrom andpivotally supported near each of said clutches, one of the arms of eachof said levers having a slot therein engaging the arm of the bandadjacent thereto, a pair of rollers journaled one above the other onanother arm of each of said levers, cables c0nnecting the carriers anddrums in pairs and each of said cables extended between the rollers onsaid arn'is of saidlevers and provided with an enlargement to contactwith said rollers, and a cable connected at one. of its ends to thethird arm of each ofsaid leve s and operatively at its other end to thetackle-block for controlling its movement. 7 I

7,. A device of the class'described, including in combination a suitablysupported hange a pulley or block journaled thereon and having in one ofits faces a plurality of pits arranged concentrically with respect toits journal, a tubular member extended laterally from said hanger, aspring pressed locking bolt located in said tubular member and havingone side of its inner end beveled and the other side thereof straight, ahandle slidably mounted on said locking bolt and having an eye at eachof its ends, a cable extended through each of said eyes and connected tomovable parts at their ends opposite those adjacent the eyes.

In testimony whereof, I have hereunto set my hand at Chicago, Illinois,on this, the th day of November, 1919.

CARL ZETTERLUND.

to the arms 69 of the clutch operating levers, which cables are extendedaround the pulley 44 and from thence upwardly between the uprights 13and through the opening 17 in the brace 16 for said uprights and fromthence upwardly to the handle 40 on the locking bolt 27 and secured inthe eyes 41 of said handle.

By this arrangement, it is apparent that the proper cable can be reachedby an operator stationed on the floor at which the delivery of thematerial is made, when by pulling on the same the arm 69 of the clutchoperating lever to which said cable is secured will be moved in theproper direction to throw the clutch it controls into engagement withthe clutch face on the drum adjacent thereto, thus fixing the drum onthe driven shaft so that in its rotation said drum will wind thereon thecable connecting it and one of the carriers, thus lowering said carrierand elevating the other one. As the cable 38 which supports the carriersis extended over the block or pulley 24 it is evi dent that in therotation of said pulley the locking bolt 27 will co-act therewith in amanner somewhat similar to a pawl with a ratchet and that but littleresistance to the movement of the pulley 24 will be offered when thebeveled portion 28 of the bolt is presented in the opposite directionfrom the rotation of the pulley, but when the straight or flat side 29of said bolt is presented in said direction, the pulley will be lockedagainst rotation. This change of the position of the bolt 27 can beeffected through the instrumentality of the cables 42 and 43 as isobvious. To hold the locking bolt 27 normally in engagement with thepulley 24 a coil spring 74 is coiled around the tubular extension 30 andfixed at one of its ends to the link 31 and connected at its other endto the arm 40 on said bolt.

In Fig. 6 of the drawings I have shown a modification in theconstruction of the support and controlling means for the block orpulley 24, which consists in omitting the links ill, 32 and brake-shoe34, and in placing the locking bolt 27 in a tubular extension 30 located on the hanger 23 above the shaft 25 on which said pulley ismounted. In this modification the cables 42 and may be connected beforeto the eyes 41 of the handle 40.

Having thus fully described my invention, what I claim as new and desireto secure by Letters Patent isl. In an apparatus of the class described,the combination with an upright support, of a tackle-block mounted onthe upper portion thereof, a cable engaging said block and depending oneach side of said support, a carrier connected to each end of saidcable, a pair of drums suitably journaled near the .base of the support,means to drive said drums, each of said drums having a clutch face,clutches mounted to engage the clutch faces of the drums and toalternately fix them on their shaft, cables connecting the carriers anddrums, means operated by said cables to alternately throw the clutchesout of engagement with the drums, and means connected to the last namedmeans for placing the clutches into engagement with the drums.

2. In an apparatus of the class described, the combination with anupright support, of a tackle-block mounted on the upperportion thereof,a cable engaging said block and depending on each side of said support,a carrier connected to each end of said cable, a pair of drums suitablyjournaled near the base of the support, means to drive said drums, eachof said drums having a clutch face, clutchesmounted to engage the clutchfaces of the drums and to alternately is. them for rotation, cablesconnecting the cal riers and drums, means operated bysaid cables toalternately throw the clutches out of engagement with the drums, 1d apair of cables-connected to the last named means for placing theclutches into engagement with the drums and operatively connected to thetackle-block for controlling its move ment.

In an. apparatus ofthe class described, the combination with an uprightsupport, of u. tackle-block mounted on the upper portion thereof, acable engaging said bloc I and de pending on each side of said support,a carrier connected to each end of said cable and each having guidingmeans engaging said support, a driven shaft mounted near the base of thesupport, means to drive said shaft, a pair of drums loosely mountedonsaid shaft and each having a clutch'facc, clutches slidably mounted onsaid shaft to engage the clutch faces of the drums and to alternatelyfix them to said shaft, cables connecting the carriers and drums inpairs, means operated by said cables to throw the clutches out of engaement with the drums, and means to throw the clutches into engagementwith the drums.

4. In an apparatus of the class described, the combination with anupright support, of a tackle-block mounted on the upper portion thereof,a cable engaging said block and de pending on each side of said support,a carrier connected to each end of said cable, a pair of drums journalednear' the base of the support, means to drive said drums, each of saiddrums having a clutch face, clutches mounted to engage the clutch facesof the drums and to alternately fix them for rotation, cables connectingthe carriers and drums in pairs, and means operated by said cables toalternately throw the clutches out of engagement withthe drums.

w 5. In an apparatus of the class described, the combination with anupright support, of

